Ο Καθηγητής του Τμήματος Μηχανολόγων και Αεροναυπηγών Μηχανικών κ. Σπήλιος Φασόης έδωσε κεντρική τιμητική ομιλία (Keynote Lecture) με τίτλο «Robust Vibration Based Structural Health Monitoring: Methods, Applications and Perspectives» στο διεθνές επιστημονικό συνέδριο ICEDyn 2025 (International Conference on Engineering Dynamics 2025) το οποίο έλαβε χώρα στις 23-25 Ιουνίου 2025 στην Λισαβώνα (Πορτογαλία).
Σύνδεσμος: https://www.icedyn.net/keynote-speakers
Keynote Presentation: Robust Vibration Based Structural Health Monitoring: Methods, Applications, and Perspectives
| Abstract: The presentation addresses the problem of random vibration based Structural Health Monitoring. Its various facets and versions, the underlying assumptions, and the subproblems of damage detection, characterization/localization, and damage level estimation are discussed. The focus is on powerful data-based Statistical Time Series (STS) type methods, with their basic principles, pros and cons, and main approaches concisely outlined. Particular attention is paid to crucial and persistent challenges, including: (I) Resorting on low bandwidth natural random excitation which is typically non-measurable; (II) achieving effective diagnosis via a minimal number of sensors; (III) maintaining monitoring performance under varying Environmental and Operational Conditions (EOCs) and Uncertainty, including population uncertainty; (IV) diagnosing minor / incipient damage; (V) estimating damage evolution; (VI) achieving accurate localization; (VII) ensuring SHM system reliability via sensor monitoring. Advances in methods for overcoming these challenges are discussed within the Multiple Model, Hyper-Sphere, and Functional Model based frameworks for various engineering applications involving composite and metallic structures. The presentation concludes with an overview of current achievements, limitations, and perspectives. |
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